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PAR vs. FKM Rubber

PAR belongs to the thermoplastics classification, while FKM rubber belongs to the thermoset elastomers (rubber). There are 7 material properties with values for both materials. Properties with values for just one material (21, in this case) are not shown.

For each property being compared, the top bar is PAR and the bottom bar is FKM rubber.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 1.2
1.8
Elongation at Break, % 50
300
Glass Transition Temperature, °C 190
-20
Limiting Oxygen Index (LOI), % 35
51
Strength to Weight: Axial, points 16
1.1
Strength to Weight: Bending, points 31
4.7
Tensile Strength: Ultimate (UTS), MPa 67
7.5